# US 12,001,038 B2 · Patterned wavelength-selective film

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- Number: US 12,001,038 B2
- Document ID: US12001038B2
- Status: Granted
- Kind: B2
- Application number: 17/261,983
- Filed: 2019-07-23
- Published: 2022-04-14
- Granted: 2024-06-04
- Earliest claimed: 2018-07-24
- Assignees: 3M Innovative Properties Company
- Applicants: 3M Innovative Properties Company
- Inventors: Kui Chen-Ho; Douglas S. Dunn; Tien Yi T. H. Whiting; Bryan T. Whiting; Taylor J. Kobe; Anthony F. Schultz; Duane D. Fansler; Jonah Shaver; John A. Wheatley; Susannah C. Clear; Daniel J. Theis; John T. Strand; Thomas J. Metzler; Kevin W. Gotrik; Scott J. Jones
- Web page: https://patentgrep.com/patent/US12001038B2

## CPC

- G02B 5/26: Reflecting filters (G02B5/28 takes precedence)
- G02B 5/124: plural reflecting elements forming part of a unitary plate or sheet
- G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation}
- G06K 19/06037: {multi-dimensional coding}
- G06K 19/06046: {Constructional details}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS

## Abstract

The disclosed patterned wavelength-selective material and process for making the patterned wavelength-selective material uses patterned applied adhesive and a structurally weak wavelength-selective material that includes portions that contact the adhesive and break to remain in contact with the adhesive. In one embodiment, the wavelength-selective material comprises an array of sections with cuts at least partially through a wavelength-selective film at each section secured to the adhesive. In another embodiment, the wavelength-selective film comprises a transfer stack of layers.

## Claims

### Claim 1

A process for making a patterned wavelength-selective film comprising:
providing a substrate;
providing a wavelength-selective film;
applying adhesive in a pattern between the substrate and the wavelength-selective film;
breaking portions of the wavelength-selective film at the adhesive to form patterned portions of the wavelength-selective film on the substrate.

### Claim 2 (depends on 1)

The process of claim 1, further comprising
applying a transparent layer to the substrate.

### Claim 3 (depends on 1)

The process of claim 1, wherein the patterned portions of the wavelength selective film are between the transparent layer and the substrate.

### Claim 4 (depends on 1)

The process of claim 1, wherein the substrate is a transparent layer applied to a retroreflective film.

### Claim 5 (depends on 1)

The process of claim 1, wherein the substrate is a carrier film and wherein the process further comprises transferring the adhesive from the carrier film to a second substrate.

### Claim 6 (depends on 1)

The process of claim 1, wherein the wavelength-selective film reflects, absorbs or scatters in the infrared or near infrared light spectrum.

### Claim 7 (depends on 1)

The process of claim 1, wherein the wavelength-selective film comprises a transfer stack of layers comprising:
a release layer compromising a metal layer or doped semi-conductor layer;
an acrylate layer overlying the release layer;
a wavelength-selective layer overlying the acrylate layer;
wherein a release value between the acrylate layer and the metal layer or doped semiconductor layer is from 2 to 50 grams per inch.

### Claim 8

A patterned wavelength-selective film comprising:
a substrate;
an adhesive at a first region of the substrate;
a wavelength-selective film comprising two opposing surfaces, a first surface on the adhesive;
an acrylate layer aligned on a second surface of the wavelength-selective film; and
an encapsulation adhesive surrounding the patterned adhesive and wavelength-selective film.

### Claim 9 (depends on 8)

The patterned wavelength-selective film of claim 8, wherein the substrate is a transparent layer applied to a retroreflective film.

### Claim 10 (depends on 9)

The patterned wavelength-selective film of claim 9, wherein the patterned portions of the wavelength selective film are between the transparent layer and the retroreflective film.

### Claim 11 (depends on 8)

The patterned wavelength-selective film of claim 8, wherein the substrate is a retroreflective film.

### Claim 12 (depends on 8)

The patterned wavelength-selective film of claim 8, wherein the wavelength-selective film is transparent in the visible light spectrum.

### Claim 13 (depends on 8)

The patterned wavelength-selective film of claim 8, wherein the wavelength-selective film reflects, absorbs, or scatters in the infrared or near infrared light spectrum.

### Claim 14 (depends on 8)

The patterned wavelength-selective film of claim 8, wherein the patterned adhesive is in a unique pattern.